upgrade v12 to go 1.20@latest #1621

	name: docker_test_cluster_10
	on: [push, pull_request]
	jobs:

	build:
	name: Docker Test Cluster 10
	runs-on:
	group: vitess-ubuntu20

	steps:

	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: '1.20'
	check-latest: true

	- name: Tune the OS
	run: \|
	echo '1024 65535' \| sudo tee -a /proc/sys/net/ipv4/ip_local_port_range

	# TEMPORARY WHILE GITHUB FIXES THIS https://github.com/actions/virtual-environments/issues/3185
	- name: Add the current IP address, long hostname and short hostname record to /etc/hosts file
	run: \|
	echo -e "$(ip addr show eth0 \| grep "inet\b" \| awk '{print $2}' \| cut -d/ -f1)\t$(hostname -f) $(hostname -s)" \| sudo tee -a /etc/hosts
	# DON'T FORGET TO REMOVE CODE ABOVE WHEN ISSUE IS ADRESSED!

	- name: Check out code
	uses: actions/checkout@v2

	- name: Run tests which require docker - 1
	uses: nick-fields/retry@v2
	with:
	timeout_minutes: 30
	max_attempts: 3
	retry_on: error
	command: \|
	go run test.go -docker=true --follow -shard 10

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